Of course I was gone all day today from Noon till 7:20, rqare for us. Tigger started out with what appeared a normal Lantus day - AMPS/307, +2/276, +4/233, so I thought he'd have a good day while we were gone, & possible go into the blue. We left the cat door open & he was outside when we got home, but seemed fine. His PMPS was 452 - v. high for him - only the 2nd time he's been above 400. His appetite was good - ate 3/4 can Wellness. After his insulin dose I decided to test him for ketones with the Nova Max - I've been able to get some fresh catches in the last week & he's been negative. However, his urine glucose ever since he's been diagnosed has been pretty much at +2 - +4. The first ketone test came up .6, the high end of normal. I tested again 5 minutes later (same ear) & it was 1.1. Now I'm freaking out. Tigger's breath smells fine. He acts fine. I did a control with both the Relion & Nova Max & they both test normal. What should I do at this point? I have sub-q fluids - is that recommended for DKA at this level? Did I test too close together for the ketones? Why would I get 2 such different numbers in just a few minutes? How often should I re-check at this point? Should I call the vet in the AM if he's still at 1.1? Trying unsuccessfully to not freak out. Tigger's +1 BG is 382, so it's already come down 70 points. I was also going to increase Tigger's Lantus tomorrow AM (Day 8) to 1.25 units, but now I'm totally confused - any advice on the dose would also be appreciated. Thanks, sorry I'm so freaked. Also, I read that Vitamin C can cause a false negative for ketones. I am giving Tigger Maxiguard for stomatitis, which contains citric acid. Citric acid is not Vitamin C, but does anyone know if it will cause a false positive? Thanks for any advice!!!!!!!!!